gen_dirichlet: Generate Dirichlet Distribution Parameters for Peaks

In rdinnager/nichefillr: Niche Filling Simulations in R

Description

Function to generate the alpha parameters for a dirichlet distribution, which will provide a particular proportion of the maximum variance for different numbers of peaks. Uses a simple numerical optimization to find alpha values generating a particular variance, as calculated from the formula for the variance in a dirichlet.

@param prop_variance Vector of proportions of the maximum variance to calculate. @param num_peaks Vector of number of carrying capacity peaks to use

@return Data.frame containing the dirichlet parameter in the last column

Usage

gen_dirichlet(prop_variance = c(0.1, 0.3, 0.5), num_peaks = c(2, 6, 10))

rdinnager/nichefillr documentation built on Dec. 3, 2019, 7:13 a.m.